Ended with 10 hours on m16 - Ha 5nm, O3 3nm, S2 3nm (all 100 x 120s subs).
Taken through an ED80 on an HEQ5 with an ASI1600MM-Pro. Taken me hours and hours just to work through PixInsight processing, and ended up using StarTools to create the masks required to remove the stars for the tone mapping. Whoah! Its quite a learning curve but rather too much fun playing with parameters at times. Would really appreciate any comments.
I've added a version with more background nebulosity although it shows up the clumpiness with background that arose when removing the stars. Not sure quite how to go about smoothing that out or not creating it in the first place?
https://www.astrobin.com/355746/B/?nc=user